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19 Weeks Pregnant: What's Going On

Your little one's skin is making a creamy substance called vernix. And perhaps you've got dark patches on your face — a temporary condition called chloasma. Get the details on pregnancy week 19.

Your Baby at 19 Weeks Pregnant

Extra eggs.If you're carrying a girl, her little reproductive system is already well established. The vagina, uterus, and fallopian tubes are in place. The ovaries contain more than 6 million primitive egg cells. When your baby is born, that number will have shrunk to about 1 million.

You've got male.If you're having a boy, his testicles have formed and have been secreting testosterone since about week 10 of your pregnancy. The external genitalia, which became male in the first trimester, are continuing to grow.

Second skin. Around this time, the skin starts to produce a waxy coating called vernix caseosa. Made of oils secreted by the skin, dead cells, and lanugo, the fine hair that covers the body, vernix protects your little one's skin from the effects of floating in amniotic fluid. Most of it will disappear before birth. Preterm babies are often born still covered with a lot of vernix.

Measuring up.Your little one is about 7 inches long and weighs anywhere from 6.5 to 8 ounces. There's a definite upswing on the fetal growth chart now, so expect some big gains in the coming weeks.

Your Pregnancy at 19 Weeks

Funny face.The dark patches you may have on your nose, cheeks, and forehead are a common condition of pregnancy called chloasma, or the "mask of pregnancy." Hormones are to blame for this splotchiness, which affects some but not all pregnant women. Pregnancy hormones are also responsible for the linea nigra, the dark line running down your belly to your pubic bone. Both chloasma and the linea nigra will gradually fade after you give birth. Exposure to the sun can darken the pigments in your skin even more, so be sure to use sunscreen or stay in the shade.

Round ligament pain.As your uterus grows, the round ligaments supporting it have to stretch. Occasionally, these stretched-out ligaments will cause a sharp pain or a dull ache in your lower abdomen, usually on one side or the other. It's probably most noticeable when you change positions or get up suddenly. Rest usually offers the best relief. Call your doctor if you’re worried about the pain.

There's so much planning to do during pregnancy, from the nursery to your hospital bag, but there's one plan you can't forget - how you and your partner want to parent. So how do you go about this important